Just replaced AE802 ECU with AE800

- Better off boost. The flat or dull spot just as you set off at pace is significantly less noticeable.
- Off boost driving is more responsive, to the point of jerky.
- On boost has certainly more torque. Car feels less 'held back' at 4000rpm+.
- Now the technical bit which John Banks or A N Other may be able to translate. The car had an ECU reset on the AE802 and then taken for a blast. Then the AE800 was fitted and immediately showed increased boost. Now the units he was talking in was not PSI so I'm lost here, but he said the AE802 was reading early 700's (something like 712) and the AE800 showed 760-770 of whatever units he was measuring in. I mentioned some on the BBS had noticed odd timing adjustments made by the AE802 but he said the timing on both ECU's was identical, I think he said +16 if that makes sense.

Generally the car is noticeably better although I don't know if it is worth paying the £250 some scap dealers are asking for AE800's. Just my view . It certainly hasn't improved my car to the extent some descibe but it was never really a slouch in the first instance anyway, especially when measured against my mates Prodrived RB5. I certainly haven't experienced any of the hesitating problems some mention so I always kinda thought I had a good one.

off boost my car is far stronger.held boost is roughly the same as the AE802,but controlled better,also the AE800 can peak far higher than than the AE802 ever did,it seems to be far more affected by temp. the AE802 only really changed from summer to winter.on mild days I usually see 15psi peak/14 held but this can jump to 17psi peaks on cold days.the highest I ever saw with the AE802 was a peak of 15psi(unless Dr Banks had been playing with it).the improvement to my car over 4000rpm is huge,it keeps pulling where as before,there was a flat spot at 4500rpm.

Yep - £250 is about what I was quoted from Central Subaru ! I've tried a couple of other places and they're quoting half that. Grade A Subaru have sold out but I'm waiting on an answer from a couple of others so fingers crossed...

Just been for another blast . Things are actually better than originally thought.

There is certainly no doubt now that it pulls all the way round to the red line without any real effort, while previously you felt it was really working hard. One of the most noticeable things is how much quieter the car is when at full chat. On the old AE802 ECU a kind of 'resonance' built up from the engine bay as you pulled over 4000rpm but now the exhaust note is now far more prominent from inside and everything is so much smoother.

The ECU module is under the carpet in the passenger side foot well. You need to remove the clips from the carpet and the trim from just in front of the door and the sill. You can then get the carpet back enough to get at the kick plate. Use a rachet spanner to remove the bolts and the module is underneath. Be *very* careful with the kick plate - the edges are razor sharp. I redecorated it in red when I tried ! The AE802 has a green label and the AE800 is black. There is a AE801 as well on a brown label but I'm not sure whether this is the new / old spec ...?